OO-4723: only show download submitted files if files can be submitted

src/main/java/org/olat/course/nodes/gta/ui/GTACoachSelectionController.java

@@ -107,6 +107,7 @@ public class GTACoachSelectionController extends BasicController implements Acti
 		
 		downloadButton = LinkFactory.createButton("bulk.download.title", mainVC, this);
 		downloadButton.setTranslator(getTranslator());
+		downloadButton.setVisible(isDownloadAvailable());
 		
 		PublisherData publisherData = gtaManager.getPublisherData(courseEnv, gtaNode, markedOnly);
 		SubscriptionContext subsContext = gtaManager.getSubscriptionContext(courseEnv, gtaNode, markedOnly);
@@ -141,6 +142,14 @@ public class GTACoachSelectionController extends BasicController implements Acti
 		
 		putInitialPanel(mainVC);
 	}
+	
+	private boolean isDownloadAvailable() {
+		ModuleConfiguration config = gtaNode.getModuleConfiguration();
+		return config.getBooleanSafe(GTACourseNode.GTASK_SUBMIT)
+				|| config.getBooleanSafe(GTACourseNode.GTASK_REVIEW_AND_CORRECTION)
+				|| config.getBooleanSafe(GTACourseNode.GTASK_REVISION_PERIOD)
+				|| config.getBooleanSafe(GTACourseNode.GTASK_GRADING);
+	}
 
 	@Override
 	protected void doDispose() {

src/main/java/org/olat/course/nodes/gta/ui/_content/coach_selection.html

@@ -16,14 +16,15 @@
 	
 	$r.render("selection")
 #elseif($r.available("list"))
+	#if($r.available("contextualSubscription") || $r.available("bulk.download.title"))
 	<div class="o_button_group o_button_group_right">
-		$r.render("bulk.download.title")
-			
+		#if($r.available("bulk.download.title"))
+			$r.render("bulk.download.title")
+		#end
 		#if($r.available("contextualSubscription"))
-			<div style="display:inline-block;">
-			$r.render("contextualSubscription")
-			</div>
-		</div>
+			<div style="display:inline-block;">$r.render("contextualSubscription")</div>
+		#end
+	</div>
 	#end
 	$r.render("list")
 #end